Premier manufacturer of external water return pumps and water quality products since 1978, a brand synonymous with reliability & efficiency. The Dolphin brand centrifugal pump is a high-quality, long-lasting, and energy-efficient external water return pump serving a wide variety of water transfer and re-circulation applications. Designed with the highest quality materials, for dependable performance and a longer-lasting product, since 1978. Proven efficiency and reliability. The best choice for closed-loop systems and return pumps requiring superior performance. A dependable pond pump and aquarium pump choice. Systems and industries that rely on Dolphin Pumps products include: freshwater aquariums, saltwater and reef aquariums, pond pump systems, commercial aquatic display systems, aquatic design and development, aquatic life support, wholesale fish distributors, fish farms, university research programs, aquaculture, aquaponics, and hydroponic commercial farming systems. Our bulk water quality products are used in large big-box pet stores to keep freshwater species and displays clear and healthy. We do not sell retail via the internet or direct to the public. Our distributors will help you choose the correct pump for your application.